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// The MIT License (MIT)
//
// Copyright (c) 2017 Timothy D. Jones
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package io.github.jonestimd.collection;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/**
 * A list that uses identity equality for {@link List#indexOf(Object)} and {@link List#lastIndexOf(Object)}.
 */
public class IdentityArrayList extends ArrayList {
    public IdentityArrayList() {
        super();
    }

    public IdentityArrayList(Collection c) {
        super(c);
    }

    public IdentityArrayList(int initialCapacity) {
        super(initialCapacity);
    }

    public int indexOf(Object o) {
        for (int i = 0; i < size(); i++) {
            if (o == get(i)) {
                return i;
            }
        }
        return -1;
    }

    public int lastIndexOf(Object o) {
        for (int i = size()-1; i >= 0; i--) {
            if (o == get(i)) {
                return i;
            }
        }
        return -1;
    }
}